#!/bin/bash


if test $1 = "-h"
then
    echo "this is a program for caculate 9*9 "
else
    i=1
    j=1
    while test $i -ne 10
    do
        for (( j = 1;j <= i;j++)) 
        do
            echo " $j * $i = $[ $i*$j]"
        done
        i=$[$i + 1]
    done
fi
